Combined type-writing and computing machine.



R. F. HoYT. COMBINED TYPE WRITING AND CGMPUTING MACHINE. APPLICATION FILED IAN. I9. I9I5. 1,298,720. Patented Apr. 1,1919.

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APPLICATION FILED IAN. I9, i915.

Patented Apr. 1, 1919.

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INVENTOI I WITNESSES:

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R. F. HOYT.

COMBINED TYPE WRITING AND COMPUTING MACHINE.

v APPLICATION FILED JAN. I9. |915.

1,298,720. Patented Apr. 1,1919.

3 SHEETS-SHEET 3.

FIGB.

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if, @m BY ATT NEY,

UNiTED i' STATES PATENT oFFroE.

RICHARD F. HOYT, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGN- 1 MENTS, A'.IO UNDERWOOD COMPUTING MACHINE COMPANY, OF NEW YORK, IN. Y., A

CORPORATION oF NEW YORK COMBINED TYPE-WRITING AND COMPUTING MACHINE. i

I Specification of Letters Patent.

Application led January 19, 1 915. Serial No. 3,031.

ments in Combined Type-IVriting and Computing Machines', of which the following is a specification.

This invention relates to typewriting machines or combined typewriting and computing machines, and more particularly to mechanism for effecting'the return of the carriage and operation of the general operator of the computing mechanism. In combined typewriting and computing machines of the Underwood-Hanson type, in connection with which thepresent invention is illustrated, the numeral keys operate through suitable mechanism to set up pins connected to rack bars, which, when a number has been written, are actuated by a general opj erator, -to run up the numbers on the computing wheels.l The general operator maybev driven by an electric motor connected thereto. through suitable transmission gearing comprising clutch members adapted to be connected by a clutch shifter which also operates to establish a circuit for the motor so that .the general operator is driven through one cycle, the clutch members being then automatically disengaged to disconnect the general operator from the motor.

In the machine shown in patent to Hart, No. 1,238,908, dated September 4, 1917, to which the present invention is hereinafter shown as applied, the motor is used for returning the carriage, and for this purpose, is connected through suitable gearing also comprising' a clutch to drive Vthe carriage. Means is therein provided for automatically actuating the clutch shifter to connect the motor with the general loperator and to close the motor circuit as the carriage complctes its forward travel; means also being provided for actuating, the clutch between` the carriage and the motor when the motor starts, so that the carriage is returned by the motor, and the general operator actuated concomitantly. shown as provided to close thel switch for the motor and operate the clutch between thc motor and carriage for returning the latter from any intermediate position.

A manual key is therein.

The electric motor of that machine is connected through suitable gearing, including la clutch, to a pinion running. in mesh with a rack on the carriage for driving the latter. During the forwardtravel of the carriage, the motor may remain at rest, and as the carriage completes its forward run, may operate through. suitable connections to establish a motor circuit, and thereby start the motor. Right and left hand adjustable margin stops determine the limits of travel of the carriage, and also have connected thereto, cams operated by an arm on the carriage to effect lthe opening and closing of said clutch at the `beginning and completion of the return travel of the carriage. The leftl hand margin stop is adjustable along a rack bar, which' may be swung downwardly by an arm on the carriage striking a cam connected to the stop, and therebyswing forwardly a depending arm connected to said rack. The depending arm controls a latch to effect the operation of the'clutch. The latch is vibrated by means of a cam rotated by the motor, so 'that when the` latch is moved to said operative position, its vibratory movement is transmitted to a clutch shifting leven to connect the clutch members, and therebyfconnects the carriage to the motor. The lclutch is therefore operated by power supplied 'directly bythe motor. Connected to the right-hand margin stop forV adjustment therewith, is a cam operated by the carriage at the completion of the return movement, and operable through suitable connections to release-the clutch.

'In the machine referred to, the switch for.l

closing the motor circuit as the carriage Ais completing its forward movement is connected with a clutch shifter, which, when the switch is moved 'to circuit-closing position, effects a clutch connection betweena 'worm wheel driven by the motor, and a shaftqwhich, when rotated, drives the general operator of the computing mechanism through one cycle of operation, the clutch being then automatically released and the switch opened. To close the motor circuit independently of the switch, and thus permit the' return y,of the carriage to be completed after the connection from the motor to the general operator has been broken, a

Vsecond switch is automatically operated to close another circuit through the motor. A

Patented Apr. 1, 191e.

Where these operations normally take place.

separate switch, which isutilized to maintain the-motor circuit closed during the return of the carriage, is automatically op- Ierated concomitantly with the operation of'l the clutch which connects the motor to return the carriage.

A manual key for returning the carriage from any intermediate position may be connected to operate a switch to close the motor circuit, and may also actuate the latch for effecting the operation of the clutch between the motor and the carriage. The switch opyerated by the manualkey may be the same as the above-mentioned automatically operated switch which maintains the motor circuit closed during the return of the carriage.

One of the objects of the present invention is to provide means by which the action of the motor, in returning the carriage, may be suspended or delayed after the carriage, on its forward travel, has reached the point Vwhich may be set at will to render inoperaT tive the motor connections. In its preferred form, this feature of the invention consists of a push button 'which may be held, againstv the actionvof a spring, in a position where it holds inoperative a setting device for the motor connections, the setting device having been previously released by the carriage at the end of the latters normal forward travel, and being thus ready to perform its usual y function as soon as the push button is released after the additional writing has been made.

Another object of the inventionis to provide a device which sets the connection from the motor to the carriage, with a spring or other actuatory so that it may operate independently of power derived from the carriage or from the latters spring motor, and

may be positively held in efietive position during the entire return movement of the carriage. To this end, in its preferred form, the setting device is spring-actuated, and is onl-V /tripped by the carriage, instead of being positively actuated thereby, as vin the machine of the application referred to.

A furtherfeatureof the .invention is to havetlie circuit-closing device for the motor cirnlit. whichmaintains the carriage drive after the lomputing operation is completed, also operated in the same general manner as the connetion-setting device just described,

so that that circuit is maintained ndependently of the carriage and its spring motor; and in this invention, the same device is preferably employed to set the motor driving connection, and to establish and maintain the auxiliary motor circuit.

Another object of the invention'isto have the connection from the manually operated carriage-return key, (which forms part of the machine of the application referred to) of such nature that continued pressure on that key during the carriage return is unnecessary; and of such nature that no force, other than a light touch, need be applied to that key in establishing the driving connections. In its preferred form, this feature ofthe invention comprises a spring-operated device which is tripped and released by the key, and which, when so tripped, is thrown by its spring to establish the motor driving connections, andto close the circuit through the motor.

`It is a feature of the invention that one and the same device for establishing the carriage-return drive from the motor, and for closing a circuit through the motor, may be, and preferably is, operable, not only'by the carriage at the end of the latters normal forward travel but also by the manual key to return the carriage from any intermediate point, and is also the device,'the action of Which may be suspended by the margin button.

Other features and advantages will hereina-fter appear.

In the accompanying drawings,

Figure l isa part sectional side elevation of the machine.

Fig. 2 is a view in front perspective showing certain of the carriage-controlled motor connections, and related parts in normal position.

Fig. 3 is a view in front perspective showl ing certain of the parts shown in Fig. 2, when the operation of the same is being suspended by the margin button.

Fig. 4 is a view in side elevation of the parts shown in Figs. 2 and 3, together with the carriage and certain other parts. in the position assumed during the return drive of the carriage.

Fig. 5 is a detail view of the switch memibers associated with the transmission mechanism.

Fig. 6 is a view similar to Fig. 2 e-Xcept that certain parts are omitted to more clearly show the restoring connections.

Fig. 7 is a detail view of the margin button device for suspending the action of the motor connections Fig. 8 is a diagrammatic view of the switch and motorcircuits.

Fig. 9 is a cross sectional view of the junction boX for4 the 4electrin conductors.

The alphabet keys 1 and the numeral keysI 2 are connected to key levers 3 and 4, fulcrumed at 5. and connected through bell cranks 6, to the type-bars 7, on a fulcrum rearwardly about its fulcrum to bring the types 9 against the printing face o f the platen 10. The platen framell is shiftable as usual to upper and lower case positions, and is mounted on a carriage 12 which travels on front and rear guide rails 13 and 14 respectively. The roll 15 on the platen yframe runs on a rail 16, shiftable up and down by the usual mechanism to move the platen between upper and lower case positions. The carriage may be driven in a letter-feed direction by the usual springmotor, (not shown) connected through a drawband to the carriage. T he letter-feed movement of the carriage may be controlled by the usual letter-feed mechanism, (see Fig. l) comprising escapement dogs 18, coperating with an escapement wheel 19, these dogs being actuated by a universal bar 20, operated by'heels 20a on the type-bars. The operation of the type-bars permits a step-bystep rotation of a pinion 21, connected to the escapement wheel 19, and running in mesh with the carriage rack 22, whereby a letter-feed travel of the carriage is eifected.`

The tabulator mechanism may comprise keys 23 on` levers 24 fulcrumed at 25, and at their rear ends extending beneath vertical plunger stops 26, which, when the keys 23 are depressed, are projected upwardly into the path of column stops on a rack bar 27 on the carriage.

An electric motor M is provided for automatically returning the4 carriage, andl for operating the general operator of the computing mechanism. The gearing for driving the carriage from the motor comprises a pulley xed to the motor shaft 29, and connected through a belt 30 to a sheave 31 on a shaft 32, to which shaft is also secured a sheave 33 connected through a belt 34 to a sheave 35 on a clutch shaft 36. Fixed to the shaft 36 is a member 37 of a clutch, which also comprisesI a member38 loose on shaft 36, and shiftable into and out of engagement with the member 37. Fixed to the shiftable member 38 is a pinion 39, in mesh with a Y .rack 40 on the carriage, for returning the carriage and operating the line-spacing mechanism. The clutch isoperated to conneet Athe motor M to return the carriage when the latter completes its letter-feed movement, at the end. of each line, the operation bf the clutch being controlled by a left-hand'margin stop 41, and-bya righthand margin stop 41av (see Fig. 2).

The margin stop'41 is slidably vmounted on a rod 42, and heldiu'any desired position of adjustment'by a rack 43 coperating with a piyoted dog ou the stop, actuated by a finger lever .44. The rack bar 43 is pivoted by means of arms 54 at the ends of the rack bar, to rock on the shaft 42 as a pivot.` The rack bar 43 is held -up in its normal position lby a coil spring 46 (see Fig. 2). As the carriage approaches the limit ofA its forward movement, determined by the position of the stop 41, a roller 47 on the carriage, engages a cam 48, and-depresses the rack bar sufficiently to operate a signal bell through the usual mechanism (not shown). Vhen the carriage has about completed its forward movement, the rollerV 47 strikes a cam surface 50 on an arm 51, pivoted at 52 to a member forming an extension of ythe margin stop and having a lug 53 bearing on the rack' bar 43, thereby further depressing the rack bar 43.

This movement of the rack bar causes depression of a link 54, pivotally connected to and depending from therack bar, and pivotaliy connected at its lower end to one end of a lever 55, fulcrumed at 56' on the machine'frame. The other end of the lever 55 lies under a pin 57 on a rod 58, so that when the link 54 is depressed, and the le-ver 55 thereby rocked, the latter, by engagement with the pin 57, causes the rod 58 to be slightly lifted. The lever 55 is Ypreferably rounded at 59 where it engages the pin 57 so that the thrust on the pin 57 may always be an upwardthrust, and so that no re,- sistance may be oered by the lever 55 to free longitudinal movement of the rod 58 while the pin 57 is thus engaged. The rod 58 is pivoted at one end, at 60, to an arm 61 fast to a rock shaft 62. The other end, 63, of the rod' 58 is free. A coil spring 64, at-

tached tothe machine frame and to the rod..

58, acts to throw the rod 58 rearwardly when a shoulder 65 on the rod 58 is lifted out of engagement with a Xed holding member 66. A cut 68 in the holding member pro-l vides for engagement of the latter with the shoulder 65 of the rod 58, and also limits the upward throw of the rod 58.

Until the Carriage is to be returned, the rod 58 is held in the Fig. 2 position by the shoulder 65.y When, however, the arm 54, acting through lever 55, swings the rod 58 upwardly around its pivot 60, the shoulder 65 is released, and the spring 64 throws the -rod 58 rearwardly. The rod 58, moving rearwardly under the action of spring 64,

carries with it the arm 61 on shaft 62, and

A the roller 47 on the carriage reaches lthel stop 41. c

As the carriage completes its forward movement,4 the circuit for the electric motor M is closed by means hereinafter described, so that the motor is ruiming, and the clutch member 37 therefore rotating at the time the roller 47 actuates the link 54. The rear face of the clutch member 37 is formed with a cam 72, against which bears the upper end of a bell crank lever 73, fulcrumed on a rod 74,

land having an arm extending forwardly and it imparts a vertical reciprocating motion to the latch lever 71, which is pivoted to the arm 76. The upper end of latch 71 is thus vibrated in front of a horizontal arm of a bell crank lever fast on a rock shaft 81 which is supported on a stationary bracket 82; the latch 71 being in position to clear bell crank arm 80 at the time the motor is started. When, however, the carriage, at the completion of its forward run, operates the cam 50 on the left-hand margin stop, as above described, to release the bar 58 to its rearward movement with rock shaft 62, the link 70, actuated by arm 69, forces the upper end of the latch against the end of the bell,

crank 80; and, as theV latch is carried downwardly by the arm 476 which is now vibrat-` ing, it engages beneath the bell crank 80; so that, when the arm 76 again rises, the bell crank 80 is swung about its pivot 81, and a knob 83, on the upper end of the bell crank 80, and which runs in van annular groove 84 in thehub of the pinion 39, carries said pinion rearwardly to connect the clutch members 37, 38.v The pinion 39, thus connected to the motor, drives the rack bar 40 to return the carriage. The line-space mechanism may also be operated automatically when the carriage is returned by any approved mechanism as, for example. that disclosed in the patent to Edward F. Kunath, N0'. 836,932, dated November 27, 1906.

Means hereinbefore referred to and shown in said .Patent No. 1,238,908, for establishing the motor circuit prior-to the return of the carriage, when a line has been completed, will now be described. A stop 85, (see Fig. 1) on the' rack bar 27, is provided with a tappet 86 into the. path of which projects a cam lug 87 on a lever 88 pivoted intermediate its ends to the framework 179 of the typewriting machine; the stop and tappet being adjustable along the rack 27 and preferably positioned to engage the lug 87...

shortly before, or just as the carriage completes its forward travel. The lever ,88 operates through a pull link 89 to rotateI a bell crank 90, towhich is attached a bar 91, the' end of which overlies the rear end of a lever 92. When the bell crank 90 is rocked by link 89, it releases leve-r 92 to the action of a spring 93 which swingsv it about its fulcrum 94, causing it by means of a pin 95, to depress a rod 96 on which the pin is mounted. Rod 96 rocks a lever 97, thereby lifting va stop pin 98, which is also in engagement with lever 97. This stop pin releases a clutch-operatingring 99, which operates to establish an electric circuit for the motor, and also operates a clutch to connect the motor to the mechanism for driving the general operator of the computing mechathus connected to the shaft 103, and itself is driven by the worm 105 on the motor shaft 29. The ring 99 carries contact lugs 99a,

(see Fig. 5) on a metal disk connected to, but insulated from the member 99, which, when the ring is rotated by the spring 100, engage spring contact arms 150 and 151, thereby electrically connecting the latter, and establishing a circuit through the motor M. The motor is thereby started, and operates through the mechanism heretofore described to return the carriage.

The motor also operates through the worm -gearing 104, 105, to rotate the shaft 103, to which is connected a crank, (not shown) to reciprocate a slide 106, connected to the general operator 107 'of the computing mechain turn returning lever 92 to normal position against the action of spring 93, and permitting a spring (not shown) to swing lever 97, together with pin 98, to normal position.k

'Inorder to maintain the motor circuit independently of the switch, hereinbefore described as operated by vcontacts carried by the clutch ring 99, the following means is provided. The arm 61 `(see Fig. 2) on the rock shaft 62, ispivoted atits end to -a slidable bar 110 which is supported at its free end on .the machine frame 179. The bar 110 at 111, has a pin-and-slot engagement with a `bell crank lever 112, pivoted at 113 to the frame. One arm of the bell crank 112 engages a piece of insulation 114 on a switch arm 115 pivoted at 116, to, and in'electrical connection with a contact member 117 which lis in electrical connection with one terminal of the niotoi'hl. The switch 115 has a lugI or contact 118 adapted, upon depression of the switch, to engage another contact 119, in electrical connection with the other terminal f of the motor M. A coil spring 120 holds the switch 115 normally1 out of reach of the Contact 119. llhen, however, the carriage lhas moved'to the point where-the r d 58 is thrown rearwardly to operate the clu ch 37,

38` this movement of the rod 58 c, ses the bai' 110 also t0 be moved in the same direction, and the bell crank 112 thereby to be rocked to depress the switch 115, from the Fig. 2 to the Fig. 6 position, thus establishing a motor circuit independent of that established by the clutch ring 99 to effect the vdrive of the general operator from the motor.

The circuit established by the switch 115 remains clcsed after the general operator clutch-99 has, by returning to Inormal posi- Ition on completionofthe general operator cycle, broken the circuit which it established. y

As the carriage 'has about completedits return movement, the clutch 37 38 is opened by the following mechanism to disconnect the carriage from the motor. Referring to Figs.v 2 and 6, the right-handnnargin stop 412L is mounted on thev shaft 42 for adjustment longitudinally of the carriage, and is held in adjusted position by a rack 125, with which engages a pawl (not shown) pivoted to the margin stop and operated by a finger piece 126. Connected to the margin stop for adjustment therewith, is an arm 127 splined on the rock shaft 42, and carrying a cam 128 in the path of the roller 47 on the carriage. The arm 127 may be connected to the 4stop 412L by means of a lip 129 on the stop entering a notch in the arm, such connection .per-f mitting the arm to rock with the shaft 42.

As the carriage nears the end of its return movement, the roller 47 strikes the cam 128 and rocks the arm 127, and with it the shaft 42, thereby swinging forwardly a depending arm 130 iiXed to the shaft '42. This movement of the arm,130 eifects a forward movement of a link 131, which connects'the end of arm 130 to the end of an arm 132 fast to the shaft 81, which, when rocked by the arm 132, causes the bell crank 80 to separate the clutchl members 37, 38, thus breaking the driving connections of the carriage from the motor.. 4 Y

When the shaft 42 .is rocked by the roller 47, upon return of thel carriage, it effects the movement of the bell crank 80l to sep- I' arate the clutch members 37,` 38,byut .the

latch 71 has-not been removed from under 'the end of the bell `crank 80. It will be remembered that the latch 71 is drawn under the bell crank 80 -by the shaft 62, acting under the impulse of the spring 64 on the bar 58, and continues to be held in that position by the spring 64 during the, return.

movement of the carriage. In order that the latch 71 may be withdrawn from under thebell, crankto permit .the clutch'members 37, 38 to be separated, and also to the end that motor circuit established through the con.- tacts 118 and 119, and to return the bar 58 to normal position against the action of 'the spring 64, the ,following means is provided.

Fast to shaft 42 is an arm 133 connected by a link 134 to a two-armed lever 135, pivoted at 136 to the machine frame. One end of the the' shaft 62 may be. rocked t0 break thev lever 135 connects with link 134, while the other end of said lever connects to link 137,

in'turn connected to an arm 138, fast to the rock shaft 62. The arm 133 acts at the same time the arm 130 acts when the shaft 42 is rocked, but is of such length, and the connections from it and the shaft 62 are such'as to cause the shaft 62 =to move the latch 71 out of the path-of the clutch bell crank 80.

As above noted, the movementv of the rock .shaft 62 from vthe shaft 42 at the-close of the return movement lof the cranknot only breaks thev clutch 37, 38 to disconnect the `carriage from .the motor, `but also breaksthe motor circuit by rocking the bell crank 112 y clockwise, permitting the spring 120 to of a line from any intermediate point there'l of, there is provided (see F ig. 1) a key 140 .having a connection 1.41, working in'a slot 142, to a bell crank lever 143 pivoted to the frame at 144. The vertical arm 145 of .this lever has a cam surface 146at its upper end to engage a dog 147 pivoted at 148 to the end of the slide bar .58. -A stop149 on the slide bar causes the dog 147 to rise-as a unit with the slide -bar when th'e key 140 `is depressed, thereby lifting the shoulder 65 on the slidebar out of contact witli the holding piece'66, and releasing the bar to the action of the spring 64, whereby, through the mechanism heretofore described, the connections from the motor tothe carriage are established, and the motor'circuit. established through `the contacts 117 and 119. A coil spring 153 (see Fig. 1) serves tohold the kev 140 in normal position and toreturn it to the normal-position when released, and a stop 154 determines the normal position of the key and its connected lever. The stop 149 on the slide bar 58, while causing,4 the latter to move as a unit with the bar when the key is depressed, does not prevent the dog 147 from having a movement permitting it to clear the key lever 145 when the bar 58 is returned to normal position, as hereinbefore described when the carriage has reached the beginning of the line. It is to be noted that the key lever 143 has no connections to any of the other mechanism, and thatr all movements resulting from operation of the key lever 143 are effected by the motor,except the movement of the slide bar 58 which is effected by the spring 64. This structure renders unnecessary any continued depression of the key 140, and also makes the op eration of the latter extremely light. v

It is often desirable that after the carriage reaches the end of its normal travel, a margin button be used so that a star may be printed and a word printed after the star,

or that something further be written before -of the motor.

. spring 156 for holding it in and returning it to normal position. Opposite and'adjacent to the end 155a of the button 155,' is a twoarmed lever 157 pivoted to the frame at 158,

the upper arm of which lever is turned to present a cam surface 159 to the button, by. means of which the lever 157 isrocked about its pivot when the button plunger is depressed. In the normal position of the .slide bar 58, that is to say, in the position shown in Fig. 2, in which theshoulder 65 is engaged'. by the holding member 66, a slot 160 lies opposite the end f the lower arm 161 of the lever 157, in such a position that the movement of the lever 157 by depression of the button causes the leve-r arm 161 to enter the groove 160 as shown in Figs. 3 and 7.

If, at this time, the roller 47, by engagement -with the cam 50, causes the slide bar 58 to be lifted, to release .the shoulder 65 from the` retaining piece 66, the slide bar 58 willnevertheless be prevented from responding to the action of the spring 64 by reason of the position of the lever. 157 in the slot 160. Consequently, even though the carriage has reached the end of its normal or prearranged travel, by holding the button 155 depressed, a star and a word, or other writing, may be made before the motor connections are established. As soon, however, as the pressure is removed from the margin button and the i latter is releasedy to its spring 156, a leaf spring 162 throws the lever 157 against its stop 163, and out of yengagement with the slide bar 58; thereby releasing the latter to the spring 64, and putting intoaction all the operations which were abnormally held in abeyance 'by the margin button.

The general operator indicated at 107, when actuated, throws forwardly the rack bars 165 which rotate the `dials of the accumulator 166. f The extent of movement of the rack bars is determined by the particular one of the pins 167 thereon,.which has been set from the corresponding numeral key 2. The pins 167 are directlyv set from linkages 168, when the particular rack bar upon or lifted, so as to be brought within reach of the linkages 168. The linkages are operated from the numeral keys by means of thrust links 169, which, when the keys are depressed, engage arms 170 on rock shafts 171, to each of which shaftsone of the linkages is connected by an arm 172, so that upon depressionof any numeral key, a rock which a pin has been set has been itself set shaft is turned and a linkage depressed to strike the pin 167 in register therewith on the pin bar 165, which itself has been set. The setting of lthe pin bars 165 is effected from selector dogs 173 on the carriage. Each selector dog is providedwith a tappet 174, which, during the travel of the carriage, comes successively into engagement with the individuals of a series of jacks 175. These' levers 17 and transposition mechanism 178,

rjacks de ress thrust links 176, and through raise the rack or pin bars 165 into 'coperative relation with the linkages 168. The specific form of computing mechanism does not in itself form a part of the present invention, and need notvbe set forth further in detail.

The typewriting machine frame 179 may be removably supportedon the casing 180, and the latter in turn removably connected to the framework 181 which supports the motor and transmission gearing. To permit the removal of the typewriting machine, the lower.' ends of the electrical contact bars 117 and 119 are bent forward as shown in Fig. 1 and rest on contact bars 182 and 183 in` the casing 180, the bars 182 and 1183, in turn bearing upon conductors 184 and 185 (see Fig. 9). The conductors 184 and 185 are respectively connected to binding posts 186 and 187, extending into a junction box 188. Electrical current from any suitable sourcesuch as indicated at 189 (sce Fig. 8) is supplied through the main cable 190, comprising a conductor 191 connected with the binding post 187, and a conductor 192 to an intermediate binding post 193. A

cable 194 extending from the junction box` nected to the binding posts 193 and 186 re-v way of conductor 192, binding post 193, conductor 195, motor, conductors 196, 197,

switch terminals 150, 151, conductor 198,

binding post 187, and conductor 191 to the source 189. The circuit through the switch formaintaining the carriage drive is from lthe source 189 by way or' conductor 192,

binding post 193, conductor 195, motor, conductor 196, binding post 186, conductor 184,

switch contacts 117, 115, 119, conductors` 183, 185, binding post 187, and conductor 191 to thesource 189.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim: p

1. In a combined typewriting and com puting machine, the combination with typewriting mechanism including a carriage, and computing mechanism, of actuating means for said computing mechanism, means controlled byv the carriage for setting into operation said actuating means, means also controlled by said carriage to return the carriage to begin a new line, means for printing, and means adapted to be manually.

made effective for holding inabeyance the return of the carriage, pending printing after said carriage has controlled the actuation of said computing mechanism.

2.In a combined typewriting and computing machine, the combination with a traveling carriage and a motor, of Computing' mechanism in which numbers are adapted to be set up, a device settable to cause the motor to be effective to operate said computing mechanism to compute the numbers set up, a separately-settable device adapted to beset -to automatically cause the motor to return the'carriage, a rod through whichvsaid' last device is effective, a spring normally tending to make said rod elective, a catch normally holding said rod but adapted to be made ineffective by said lastnamed device to cause thev motor to return the carriage, a key operable to make said rod edective at will, and a finger-piece adapted to temporarily restrain said rod, but adapted, upon 'its' release, to permit the sprin to make the rod effective.

3. 11 a combined typewriting and computing machine, the combination with 'a travelingA carriage and a lnormally idle motor, of computing mechanism in which numlbers are adapted to be set up, a device settable to cause the motor to start and vto be elfective to operate said computing mechanism t0 compute the numbers set up, a separately-settable device adapted to be set to automatically cause thev motor to start and to return the carriage, a rod through which said last device is effective, a spring normally tending to make said rod eective, a catch normally holding said rod but adapted to be made ineec ive by said last-named device to cau the motor to return the carriage, a key operable to make saidrod effective at will, and a finger-piece adapted to temporarily restrain said rod, but, adapted, upon its release, to permit the spring to make the rod effective'.

4. In a .combined typewriting and computing machine, the VAAcombination with a.

traveling carriage and la motor for returning the carriage, lof computing mechanism on which a number is adapted to be set up, connections whereby the motor may operate the computing mechanism to compute the number sol set up, a tappet settable to cause the "automaticoperation of the computing mechanism by the motor, at a time determined by the travel of the carriage, a separately-settable device to cause the-carriage to'be automatically returned by said motor, and a linger-piece adapted to be operated to linhibit the operation of said device.

5. In a combined typewriting and computing machine, the combination with a traveling carriage and a normally idle motor for returning the carriage, of computing mechanism onfwhich a number is adapted to be set up, connections whereby the motor may operate the computing mechanism to compute the number so set up, a tappet settable to start the motor and cause the automatic operation of the computing mechanism thereby, yat a. time determined by the travel of the carriage, a separately-settable device to start the motor and cause the carriage to be automatically returned thereby,

and a finger-piece Iadapted to be operated to nections for returning said carriage, a tappet settable to cause the travel of the carriage to automatically make said irst-named connections eiiective to compute, a device adapted tobe set to be effective at the same time to cause said second-named connections to be effective to return the carriage, and a finger-piece adapted to be operated to hold said last-namedconnections ineffective,

said last-named connections adapted to be made effective at the release of sald fingerpiece.

.7. In a combined typewriting and com-` puting machine, the combination with a *traveling carriage and a motor, of computy .ing mechanism in which numbers are adaptcatch normally holding said rod but adapted to be made ineffective by said last-named device to cause the motor to return the carriage, anda finger-piece adaptedto temporarily restrain said rod, but adapted, upon its release, to permit the spring to make the rod elective. l

8. In a combined typewriting and comi puting machine, Ithe combination with a traveling carriage and a normally idle m0- tor, of computing mechanism in which numbers are adapted to be set up, a device settable to cause the motor to start and to be eective to operate said computing mechanism to compute the numbers set up, a separately-settable device adapted to" be set to automatically cause the motor to startl and to return the carriage, a rodthrough which said last device is effective, a spring nor- `mally tending to make said rod eli'ective, a catch normally holding said rod but adapted to be made ineffective by said last-named device to cause the motor to return the carriage, and a finger-piece adapted to temporarily restrain said rod, but adapted, upon its release, to permit the spring to make the rod effective. l

9. In a combined' typewriting and computing machine, the combination with a traveling carriage and a motor for returning the carriage, of computing mechanism on which a number is adapted to be set up, connections whereby the motor may operate the computing mechanism to compute the number so set-up, a tappet settable to cause the automatic operation of the computing mechanism by thevmotor, at a time determined by the travel of the carriage, a separately-settable device to cause the carriage a key ineffective on the computing mechanism,V but adapted to be depressed to cause the motor t0 return the carriage, and La iinger-piece adapted to be operated to inhibit the operation of said device.

l0. In a combined typewriting and computing machine, the combination with a traveling carriage and a normally idle motor for returning the carriage, of computing mechanism on which a number is adapted to be set up, connections whereby the motor may operate the computing mechanism to compute the number so set up, a tappet settable to start the motor and cause the automatic operation of the computing mechanism thereby, at a time determined by the travel of the carriage, a Separately-settable device to start the motor and cause the carriage to'be automatically returned thereby,

a key inel'ective on the computing mechanism, but adapted to start the motor and cause it to return the carriage, and a {ingerpiece adapted to be operated to inhibit the so v operation of said device, but adapted on its release to start the motor and cause the return of the carriage.

11. In a combined typewriting and coinputing machine, the combination 'with a traveling carriage and -computing mechanism in which `numbers are adapted to be set up, of power connections for causing the set-up numbers to be-computed, power connections for returning said carriage, a tappet settable to cause the travel of the carriage to automatically make said first-named connections effective to compute, a device adapted to be set to beeective at the same time to cause said second-named connect-ions to be efective to return the carriage, a key operable to make said second-named power connections effective to return the carriage,

but ineffective on the computing mechanism,

and a finger-piece adapted to be operated to 

